transporAppCI/node_app/test/user.service.spec.ts

import { Test, TestingModule } from '@nestjs/testing';
import { CreateUserUseCase } from '../src/application/use-cases/create-user.use-case';
import { IUserRepository } from '../src/application/interfaces/i-user.repository';
import { IHasherService } from '../src/application/interfaces/i-hasher.service';

describe('CreateUserUseCase', () => {
  let useCase: CreateUserUseCase;
  let userRepository: IUserRepository;
  let hasherService: IHasherService;

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      providers: [
        CreateUserUseCase,
        {
          provide: IUserRepository,
          useValue: {
            create: jest.fn(),
            findByEmail: jest.fn(),
          },
        },
        {
          provide: IHasherService,
          useValue: {
            hash: jest.fn(),
          },
        },
      ],
    }).compile();

    useCase = module.get<CreateUserUseCase>(CreateUserUseCase);
    userRepository = module.get<IUserRepository>(IUserRepository);
    hasherService = module.get<IHasherService>(IHasherService);
  });

  it('should be defined', () => {
    expect(useCase).toBeDefined();
  });

  it('should create a user successfully', async () => {
    const createUserDto = {
      email: 'test@test.com',
      password: 'password123',
      name: 'Test User',
      otherName: 'Other Name',
      address: 'Test Address',
      telephone: '1234567890',
    };

    const hashedPassword = 'hashedPassword123';
    const createdUser = { ...createUserDto, id: 1, password: hashedPassword };

    jest.spyOn(hasherService, 'hash').mockResolvedValue(hashedPassword);
    jest.spyOn(userRepository, 'create').mockResolvedValue(createdUser);

    const result = await useCase.execute(createUserDto);

    expect(result).toEqual(createdUser);
    expect(hasherService.hash).toHaveBeenCalledWith(createUserDto.password);
    expect(userRepository.create).toHaveBeenCalledWith({
      ...createUserDto,
      password: hashedPassword,
    });
  });
});